Window lock



March 15,1927. 1,620,705

J. WAlTCH WINDOW LOCK Original Filed July 5. 1924 Patented Mar. 15,1927.

STATES eanna PATENT easiest.

Jornv warren, or misse e PENNSYLVANIA, A$SIGNOR or ONE-HALF 'ro Farina:LAsAvron; or Laron'rn, INDIANA.

'wrnnow Loan.

Application filed July 5', 1924, Serial no. 724,300. Renewed August 3,1926.

My invention relates'to window locks, particularly adapted for use inconnection with ordinary windows comp-rising a lower and an upper sash.

The primary object of this invention is to provide a window lock whichwill look a window of the type stated, in either the closed position orin variously adjusted or open positions.

Further objects of the invention are to provide a lock of the classdescribed which may be readily attached to a window of the ordinaryconstruction without defacing the latter in any manner, which is slmplein its construction and arrangement, strong, durable and efficient inits use, attractive in appearance and comparatively inexpensive tomanufacture.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention hereinafter disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

In the drawing forming a portion of this specification and wherein likenumerals of reference designate corresponding parts throughout theseveral views Figure 1 is a fragmentary front view of t a windowprovided with a locking device constructed in accordance with myinvention.

Figure 2 is an enlarged view of the locking plate with a portion thereofbroken away.

Figure 3 is a view on line IIIIII, Figure 2.

Figure 4 is aview on line IVIV, Figure 3.

Referring in detail to the drawing 1 denotes the upper sash and 2 thelower sash of a window of the usual construction.

A vertically disposed elongated metal looking plate 3 is securely fixedto the front face of one of the vertical members of the upper sash l bymeans of a plurality of screws 4: which engage in respective apertures 5formed in the locking plate 3. The apertures 5 are countersunk so thatthe heads of the screws l, will be flush with front face of the lockingplate 3.

The locking plate" 3 is positioned at the lower endv of the verticalsash menibcr and has all of its marginal edges bent rearward-'- ly toform the flanges 6, thereby providing ally projects forwardly relativelyto the associated sash member. ther permits of the operation of thelatching element 8 connection with the locking plate 3 in the manner tobe described, and permits of the attachment of the plate 3 withoutdefacing the sash member in any manner.

The locking plate 3 is provided with a plurality of uniformly spacedslots 9. Each of the latter is substantially U-shaped being formed witha centrally disposed depending catch 10, which is depressed to provide ahorizontally disposed curvilinear rear face to facilitate its engagementby the latching ele ment 8.

The latching element 8, of the customary well known construction, issecured with its base 11 to theupper edge of the top member of the lowersash 2 by means of screws 12. The cam latch 13 is pivoted, as at 14, tothe base 11, and is provided with the usual shifting handle 15.

When the cam latch 13 is disengaged, the upper sash 1 may be lowered orthe lower sash may be elevated to any position desired. By manipulatingthe cam latch 13 to engage the adjacent catch 10 of the locking plate 3,the window sashes 1 and 2 will be securely clamped together and lockedin the adjusted position. i

The curvilinear rear face of the catch 10 corresponds to the curvatureof the cam latch 13 and in connection with the clearance 7 facilitatesthe engagement of the cam latch 13 with the catch 10.

One side edge of the locking plate 3 is integrally formed with a pair oflaterally projecting inwardly extending cars 16 adapted to be manuallyengaged for taking up the The clearance 7 furill] Inn

plan of the upper sash 1 when drawing the latter slightly forward, ifnecessary, to asa sure the engagementof the cam latch 13 with the catch10, in the manner above described. It will be obvious that when thelocking plate 3 is attached to the left hand sash member, asillustrated, the ears 16 will extend in one direction, and when it isdesiredto attach the locking plate to the right hand sash member theplate is constructed to position the lateral ears thereof in the reverseor opposite direction.

What I claim is:

The combination with the upper and lower sash of a window and acurvilinear cam latching element secured to the upper horizontal memberof said lower sash, of an elongated vertically disposed locking plate,mounted on one of the vertical members of said upper sash and formedwith a plurality of substantially Ushaped uniformly spaced slots, eachof said slot-s having a depending catch member extending therein andhaving its ends spaced from the respective ends of said slots, saidcatch members having a horizontally disposed convexed rear facecorresponding to the curvature of the said latching element, said platehaving its marginal edges bent rearwardly forming flanges engaging thefront face of said associated upper sash and providing clearance betweenthe front face of the latter and the rear convex faces of said catchmembers to permit JOHN WAITCH.

